View Full Version : Help with CEL Codes

05-22-2011, 06:35 PM
Hey guys,

I have a b5 v6 that seems to be giving me some problems. First on cold starts the secondary air pump seems to go off whack.. I guess it's dying. But the engine also revvs up and down and every now and then the car stalls whether idle or moving.. wierd... here are the codes I pulled off using my vag.

17549 - Load Calculation Cross Check: Implausible Value
P1141 - 35-10 - - - Intermittent
17537 - Fuel Trim: Bank 2 (Mult): System too Rich
P1129 - 35-00 - -
17535 - Fuel Trim: Bank 1 (Mult): System too Rich
P1127 - 35-10 - - - Intermittent
17545 - Fuel Trim: Bank 1 (Add): System too Rich
P1137 - 35-10 - - - Intermittent
17547 - Fuel Trim: Bank 2 (Add): System too Rich
P1139 - 35-10 - - - Intermittent

From searching the forum and the web, I figure this is due to a bad MAF? I just went and bought a MAF cleaner from advanced auto, will try to clean it tomorrow. But I can really use some pointers as to what else I might have to or should check. Thanks!

Also, here's a screen cap of the block readings on a cold start.


05-22-2011, 06:54 PM
what are your block 032 values? (Fuel Trims)

05-22-2011, 06:56 PM
How about long term fuel trims, block 032.

EDIT: Boosted beat me to it.

05-22-2011, 10:53 PM
A bad MAF should make the ECU throw "System too lean" error codes because the MAF doesn't detect the correct amount of air that goes through the intake and usually reports less so the ECU opens the injectors for a shorter period of time. This way some of the oxygen is not used for the mixture because the injected fuel is not enough and you get the "System too lean" error code meaning that oxygen is left in the exhaust.
When you get "System too rich" I think that you should check the spark plugs, coils and the other components that help generating the spark because this code says that you have gas left in the exhaust.

05-23-2011, 09:54 AM
Thank for trying to help guys. Here's the readings from block 032..


@Cristisor: I think what you say makes sense. I will try to check the spark plugs and coils as well.

05-24-2011, 06:46 AM
anyone? i'm putting in new spark plugs today.. should I look into my o2 sensors as well?

05-25-2011, 12:02 AM
Hi Zipper.
Sorry but yesterday I was really busy and I didn't have time to check the forum.
It looks like you have very high values on channel 032 so probably you have a very low gas mileage.
Sometimes the oxygen sensor can go bad and show such big regulation values but I don't think that both oxygen sensors can go bad at the same time so you might actually have a lot of gas left in the exhaust. Unless you want to go to a car repair shop and get a mechanic to check the car you can start by replacing the spark plugs and the coils. On group 030 I see that it shows "110" for B1S2 and B2S2 and then it specifies "111=OK" so check for errors on these 2 sensors.
Anyway this is either a problem with both oxygen sensors or with the ignition system.